[Mesa-dev] [PATCH 7/7] intel: tools: add aubinator_error_decode tool
Lionel Landwerlin
lionel.g.landwerlin at intel.com
Wed Mar 29 20:07:20 UTC 2017
This is pretty much the same tool as what i-g-t has, only with a more
fancy decoding of the instructions/registers. It also doesn't support
anything before gen4.
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin at intel.com>
---
src/intel/Makefile.tools.am | 20 +-
src/intel/common/gen_decoder.c | 10 +
src/intel/common/gen_decoder.h | 1 +
src/intel/tools/.gitignore | 1 +
src/intel/tools/aubinator_error_decode.c | 783 +++++++++++++++++++++++++++++++
5 files changed, 814 insertions(+), 1 deletion(-)
create mode 100644 src/intel/tools/aubinator_error_decode.c
diff --git a/src/intel/Makefile.tools.am b/src/intel/Makefile.tools.am
index 245bd03eef..a3a917d50e 100644
--- a/src/intel/Makefile.tools.am
+++ b/src/intel/Makefile.tools.am
@@ -19,7 +19,9 @@
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.
-noinst_PROGRAMS += tools/aubinator
+noinst_PROGRAMS += \
+ tools/aubinator \
+ tools/aubinator_error_decode
tools_aubinator_SOURCES = \
tools/aubinator.c \
@@ -41,3 +43,19 @@ tools_aubinator_LDADD = \
$(EXPAT_LIBS) \
$(ZLIB_LIBS) \
-lm
+
+
+tools_aubinator_error_decode_SOURCES = \
+ tools/aubinator_error_decode.c
+
+tools_aubinator_error_decode_LDADD = \
+ common/libintel_common.la \
+ $(top_builddir)/src/util/libmesautil.la \
+ $(aubinator_DEPS) \
+ $(EXPAT_LIBS) \
+ $(ZLIB_LIBS)
+
+tools_aubinator_error_decode_CFLAGS = \
+ $(AM_CFLAGS) \
+ $(EXPAT_CFLAGS) \
+ $(ZLIB_CFLAGS)
diff --git a/src/intel/common/gen_decoder.c b/src/intel/common/gen_decoder.c
index 1c3246f265..3af472caef 100644
--- a/src/intel/common/gen_decoder.c
+++ b/src/intel/common/gen_decoder.c
@@ -112,6 +112,16 @@ gen_spec_find_register(struct gen_spec *spec, uint32_t offset)
return NULL;
}
+struct gen_group *
+gen_spec_find_register_by_name(struct gen_spec *spec, const char *name)
+{
+ for (int i = 0; i < spec->nregisters; i++)
+ if (strcmp(spec->registers[i]->name, name) == 0)
+ return spec->registers[i];
+
+ return NULL;
+}
+
struct gen_enum *
gen_spec_find_enum(struct gen_spec *spec, const char *name)
{
diff --git a/src/intel/common/gen_decoder.h b/src/intel/common/gen_decoder.h
index 1c41de80a4..936b052455 100644
--- a/src/intel/common/gen_decoder.h
+++ b/src/intel/common/gen_decoder.h
@@ -45,6 +45,7 @@ struct gen_spec *gen_spec_load_from_path(const struct gen_device_info *devinfo,
uint32_t gen_spec_get_gen(struct gen_spec *spec);
struct gen_group *gen_spec_find_instruction(struct gen_spec *spec, const uint32_t *p);
struct gen_group *gen_spec_find_register(struct gen_spec *spec, uint32_t offset);
+struct gen_group *gen_spec_find_register_by_name(struct gen_spec *spec, const char *name);
int gen_group_get_length(struct gen_group *group, const uint32_t *p);
const char *gen_group_get_name(struct gen_group *group);
uint32_t gen_group_get_opcode(struct gen_group *group);
diff --git a/src/intel/tools/.gitignore b/src/intel/tools/.gitignore
index 0c80a6fed2..27437f9eef 100644
--- a/src/intel/tools/.gitignore
+++ b/src/intel/tools/.gitignore
@@ -1 +1,2 @@
/aubinator
+/aubinator_error_decode
diff --git a/src/intel/tools/aubinator_error_decode.c b/src/intel/tools/aubinator_error_decode.c
new file mode 100644
index 0000000000..a477086cd8
--- /dev/null
+++ b/src/intel/tools/aubinator_error_decode.c
@@ -0,0 +1,783 @@
+/*
+ * Copyright © 2007-2017 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ * Eric Anholt <eric at anholt.net>
+ * Carl Worth <cworth at cworth.org>
+ * Chris Wilson <chris at chris-wilson.co.uk>
+ *
+ */
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <unistd.h>
+#include <inttypes.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <err.h>
+#include <assert.h>
+#include <getopt.h>
+#include <zlib.h>
+
+#include "common/gen_decoder.h"
+#include "util/macros.h"
+
+#define CSI "\e["
+#define BLUE_HEADER CSI "0;44m"
+#define GREEN_HEADER CSI "1;42m"
+#define NORMAL CSI "0m"
+
+/* options */
+
+static bool option_full_decode = true;
+static bool option_print_offsets = true;
+static enum { COLOR_AUTO, COLOR_ALWAYS, COLOR_NEVER } option_color;
+static char *xml_path = NULL;
+
+static uint32_t
+print_head(unsigned int reg)
+{
+ printf(" head = 0x%08x, wraps = %d\n", reg & (0x7ffff<<2), reg >> 21);
+ return reg & (0x7ffff<<2);
+}
+
+static char *
+print_iterator_values(struct gen_field_iterator *iter, int *idx)
+{
+ char *token = NULL;
+ if (strstr(iter->value, "struct") == NULL) {
+ printf(" %s: %s\n", iter->name, iter->value);
+ } else {
+ token = strtok(iter->value, " ");
+ if (token != NULL) {
+ token = strtok(NULL, " ");
+ if (idx)
+ *idx = atoi(strtok(NULL, ">"));
+ } else {
+ token = NULL;
+ }
+ printf(" %s:<struct %s>\n", iter->name, token);
+ }
+ return token;
+}
+
+static void
+print_register(struct gen_spec *spec, const char *name, uint32_t reg)
+{
+ struct gen_group *reg_spec = gen_spec_find_register_by_name(spec, name);
+
+ if (reg_spec)
+ gen_print_group(stdout, reg_spec, 0, ®, 0,
+ option_color == COLOR_ALWAYS);
+}
+
+struct ring_register_mapping {
+ const char *ring_name;
+ const char *register_name;
+};
+
+static const struct ring_register_mapping acthd_registers[] = {
+ { "blt", "BCS_ACTHD_UDW" },
+ { "bsd", "VCS_ACTHD_UDW" },
+ { "bsd2", "VCS2_ACTHD_UDW" },
+ { "render", "ACTHD_UDW" },
+ { "vebox", "VECS_ACTHD_UDW" },
+};
+
+static const struct ring_register_mapping ctl_registers[] = {
+ { "blt", "BCS_RING_BUFFER_CTL" },
+ { "bsd", "VCS_RING_BUFFER_CTL" },
+ { "bsd2", "VCS2_RING_BUFFER_CTL" },
+ { "render", "RCS_RING_BUFFER_CTL" },
+ { "vebox", "VECS_RING_BUFFER_CTL" },
+};
+
+static const struct ring_register_mapping fault_registers[] = {
+ { "blt", "BCS_FAULT_REG" },
+ { "bsd", "VCS_FAULT_REG" },
+ { "render", "RCS_FAULT_REG" },
+ { "vebox", "VECS_FAULT_REG" },
+};
+
+static const char *
+register_name_from_ring(const struct ring_register_mapping *mapping,
+ unsigned nb_mapping,
+ const char *ring_name)
+{
+ for (unsigned i = 0; i < nb_mapping; i++) {
+ if (strcmp(mapping[i].ring_name, ring_name) == 0)
+ return mapping[i].register_name;
+ }
+ return NULL;
+}
+
+static const char *
+instdone_register_for_ring(const struct gen_device_info *devinfo,
+ const char *ring_name)
+{
+ if (strcmp(ring_name, "blt") == 0)
+ return "BCS_INSTDONE";
+ else if (strcmp(ring_name, "vebox") == 0)
+ return "VECS_INSTDONE";
+ else if (strcmp(ring_name, "bsd") == 0)
+ return "VCS_INSTDONE";
+ else if (strcmp(ring_name, "render") == 0) {
+ if (devinfo->gen == 6)
+ return "INSTDONE_2";
+ return "INSTDONE_1";
+ }
+
+ return NULL;
+}
+
+static void
+print_pgtbl_err(unsigned int reg, struct gen_device_info *devinfo)
+{
+ if (reg & (1 << 26))
+ printf(" Invalid Sampler Cache GTT entry\n");
+ if (reg & (1 << 24))
+ printf(" Invalid Render Cache GTT entry\n");
+ if (reg & (1 << 23))
+ printf(" Invalid Instruction/State Cache GTT entry\n");
+ if (reg & (1 << 22))
+ printf(" There is no ROC, this cannot occur!\n");
+ if (reg & (1 << 21))
+ printf(" Invalid GTT entry during Vertex Fetch\n");
+ if (reg & (1 << 20))
+ printf(" Invalid GTT entry during Command Fetch\n");
+ if (reg & (1 << 19))
+ printf(" Invalid GTT entry during CS\n");
+ if (reg & (1 << 18))
+ printf(" Invalid GTT entry during Cursor Fetch\n");
+ if (reg & (1 << 17))
+ printf(" Invalid GTT entry during Overlay Fetch\n");
+ if (reg & (1 << 8))
+ printf(" Invalid GTT entry during Display B Fetch\n");
+ if (reg & (1 << 4))
+ printf(" Invalid GTT entry during Display A Fetch\n");
+ if (reg & (1 << 1))
+ printf(" Valid PTE references illegal memory\n");
+ if (reg & (1 << 0))
+ printf(" Invalid GTT entry during fetch for host\n");
+}
+
+static void
+print_snb_fence(struct gen_device_info *devinfo, uint64_t fence)
+{
+ printf(" %svalid, %c-tiled, pitch: %i, start: 0x%08x, size: %u\n",
+ fence & 1 ? "" : "in",
+ fence & (1<<1) ? 'y' : 'x',
+ (int)(((fence>>32)&0xfff)+1)*128,
+ (uint32_t)fence & 0xfffff000,
+ (uint32_t)(((fence>>32)&0xfffff000) - (fence&0xfffff000) + 4096));
+}
+
+static void
+print_i965_fence(struct gen_device_info *devinfo, uint64_t fence)
+{
+ printf(" %svalid, %c-tiled, pitch: %i, start: 0x%08x, size: %u\n",
+ fence & 1 ? "" : "in",
+ fence & (1<<1) ? 'y' : 'x',
+ (int)(((fence>>2)&0x1ff)+1)*128,
+ (uint32_t)fence & 0xfffff000,
+ (uint32_t)(((fence>>32)&0xfffff000) - (fence&0xfffff000) + 4096));
+}
+
+static void
+print_fence(struct gen_device_info *devinfo, uint64_t fence)
+{
+ if (devinfo->gen == 6 || devinfo->gen == 7) {
+ return print_snb_fence(devinfo, fence);
+ } else if (devinfo->gen == 4 || devinfo->gen == 5) {
+ return print_i965_fence(devinfo, fence);
+ }
+}
+
+static void
+print_fault_data(struct gen_device_info *devinfo, uint32_t data1, uint32_t data0)
+{
+ uint64_t address;
+
+ if (devinfo->gen < 8)
+ return;
+
+ address = ((uint64_t)(data0) << 12) | ((uint64_t)data1 & 0xf) << 44;
+ printf(" Address 0x%016" PRIx64 " %s\n", address,
+ data1 & (1 << 4) ? "GGTT" : "PPGTT");
+}
+
+#define MAX_RINGS 10 /* I really hope this never... */
+
+#define CSI "\e["
+#define NORMAL CSI "0m"
+
+static void decode(struct gen_spec *spec,
+ const char *buffer_name,
+ const char *ring_name,
+ uint64_t gtt_offset,
+ uint32_t head_offset,
+ uint32_t *data,
+ int *count)
+{
+ uint32_t *p, *end = (data + *count);
+ unsigned int length;
+ struct gen_group *inst;
+
+ for (p = data; p < end; p += length) {
+ const char *color = option_full_decode ? BLUE_HEADER : NORMAL,
+ *reset_color = NORMAL;
+ uint64_t offset;
+
+ inst = gen_spec_find_instruction(spec, p);
+ if (inst == NULL) {
+ printf("unknown instruction %08x\n", p[0]);
+ length = (p[0] & 0xff) + 2;
+ continue;
+ }
+ if (option_color == COLOR_NEVER) {
+ color = "";
+ reset_color = "";
+ }
+
+ if (option_print_offsets)
+ offset = gtt_offset + ((uint8_t*) p - (uint8_t*) data);
+ else
+ offset = 0;
+
+ printf("%s0x%08"PRIx64": 0x%08x: %-80s%s\n",
+ color, offset, p[0], gen_group_get_name(inst), reset_color);
+
+ gen_print_group(stdout, inst, gtt_offset, data, 1,
+ option_color == COLOR_ALWAYS);
+ length = gen_group_get_length(inst, p);
+ }
+}
+
+static int zlib_inflate(uint32_t **ptr, int len)
+{
+ struct z_stream_s zstream;
+ void *out;
+
+ memset(&zstream, 0, sizeof(zstream));
+
+ zstream.next_in = (unsigned char *)*ptr;
+ zstream.avail_in = 4*len;
+
+ if (inflateInit(&zstream) != Z_OK)
+ return 0;
+
+ out = malloc(128*4096); /* approximate obj size */
+ zstream.next_out = out;
+ zstream.avail_out = 40*len;
+
+ do {
+ switch (inflate(&zstream, Z_SYNC_FLUSH)) {
+ case Z_STREAM_END:
+ goto end;
+ case Z_OK:
+ break;
+ default:
+ inflateEnd(&zstream);
+ return 0;
+ }
+
+ if (zstream.avail_out)
+ break;
+
+ out = realloc(out, 2*zstream.total_out);
+ if (out == NULL) {
+ inflateEnd(&zstream);
+ return 0;
+ }
+
+ zstream.next_out = (unsigned char *)out + zstream.total_out;
+ zstream.avail_out = zstream.total_out;
+ } while (1);
+ end:
+ inflateEnd(&zstream);
+ free(*ptr);
+ *ptr = out;
+ return zstream.total_out / 4;
+}
+
+static int ascii85_decode(const char *in, uint32_t **out, bool inflate)
+{
+ int len = 0, size = 1024;
+
+ *out = realloc(*out, sizeof(uint32_t)*size);
+ if (*out == NULL)
+ return 0;
+
+ while (*in >= '!' && *in <= 'z') {
+ uint32_t v = 0;
+
+ if (len == size) {
+ size *= 2;
+ *out = realloc(*out, sizeof(uint32_t)*size);
+ if (*out == NULL)
+ return 0;
+ }
+
+ if (*in == 'z') {
+ in++;
+ } else {
+ v += in[0] - 33; v *= 85;
+ v += in[1] - 33; v *= 85;
+ v += in[2] - 33; v *= 85;
+ v += in[3] - 33; v *= 85;
+ v += in[4] - 33;
+ in += 5;
+ }
+ (*out)[len++] = v;
+ }
+
+ if (!inflate)
+ return len;
+
+ return zlib_inflate(out, len);
+}
+
+static void
+read_data_file(FILE *file)
+{
+ struct gen_spec *spec = NULL;
+ uint32_t *data = NULL;
+ uint32_t head[MAX_RINGS];
+ int head_idx = 0;
+ int num_rings = 0;
+ long long unsigned fence;
+ int data_size = 0, count = 0, line_number = 0, matched;
+ char *line = NULL;
+ size_t line_size;
+ uint32_t offset, value;
+ uint64_t gtt_offset = 0, new_gtt_offset;
+ uint32_t head_offset = -1;
+ const char *buffer_name = "batch buffer";
+ char *ring_name = NULL;
+ struct gen_device_info devinfo;
+
+ while (getline(&line, &line_size, file) > 0) {
+ char *new_ring_name = NULL;
+ char *dashes;
+ line_number++;
+
+ if (sscanf(line, "%m[^ ] command stream\n", &new_ring_name) > 0) {
+ free(ring_name);
+ ring_name = new_ring_name;
+ }
+
+ dashes = strstr(line, "---");
+ if (dashes) {
+ uint32_t lo, hi;
+ char *new_ring_name = malloc(dashes - line);
+ strncpy(new_ring_name, line, dashes - line);
+ new_ring_name[dashes - line - 1] = '\0';
+
+ printf("%s", line);
+
+ matched = sscanf(dashes, "--- gtt_offset = 0x%08x %08x\n",
+ &hi, &lo);
+ if (matched > 0) {
+ new_gtt_offset = hi;
+ if (matched == 2) {
+ new_gtt_offset <<= 32;
+ new_gtt_offset |= lo;
+ }
+
+ decode(spec,
+ buffer_name, ring_name,
+ gtt_offset, head_offset,
+ data, &count);
+ gtt_offset = new_gtt_offset;
+ head_offset = -1;
+ free(ring_name);
+ ring_name = new_ring_name;
+ buffer_name = "batch buffer";
+ continue;
+ }
+
+ matched = sscanf(dashes, "--- ringbuffer = 0x%08x %08x\n",
+ &hi, &lo);
+ if (matched > 0) {
+ new_gtt_offset = hi;
+ if (matched == 2) {
+ new_gtt_offset <<= 32;
+ new_gtt_offset |= lo;
+ }
+
+ decode(spec,
+ buffer_name, ring_name,
+ gtt_offset, head_offset,
+ data, &count);
+ gtt_offset = new_gtt_offset;
+ if (head_idx < num_rings)
+ head_offset = head[head_idx++];
+ else
+ head_offset = -1;
+ free(ring_name);
+ ring_name = new_ring_name;
+ buffer_name = "ring buffer";
+ continue;
+ }
+
+ matched = sscanf(dashes, "--- HW Context = 0x%08x %08x\n",
+ &hi, &lo);
+ if (matched > 0) {
+ new_gtt_offset = hi;
+ if (matched == 2) {
+ new_gtt_offset <<= 32;
+ new_gtt_offset |= lo;
+ }
+
+ decode(spec,
+ buffer_name, ring_name,
+ gtt_offset, head_offset,
+ data, &count);
+ gtt_offset = new_gtt_offset;
+ head_offset = -1;
+ free(ring_name);
+ ring_name = new_ring_name;
+ buffer_name = "HW Context";
+ continue;
+ }
+ }
+
+ if (line[0] == ':' || line[0] == '~') {
+ count = ascii85_decode(line+1, &data, line[0] == ':');
+ if (count == 0) {
+ fprintf(stderr, "ASCII85 decode failed.\n");
+ exit(1);
+ }
+ decode(spec,
+ buffer_name, ring_name,
+ gtt_offset, head_offset,
+ data, &count);
+ continue;
+ }
+
+ matched = sscanf(line, "%08x : %08x", &offset, &value);
+ if (matched != 2) {
+ uint32_t reg, reg2;
+
+ /* display reg section is after the ringbuffers, don't mix them */
+ decode(spec,
+ buffer_name, ring_name,
+ gtt_offset, head_offset,
+ data, &count);
+
+ printf("%s", line);
+
+ matched = sscanf(line, "PCI ID: 0x%04x\n", ®);
+ if (matched == 0)
+ matched = sscanf(line, " PCI ID: 0x%04x\n", ®);
+ if (matched == 0) {
+ const char *pci_id_start = strstr(line, "PCI ID");
+ if (pci_id_start)
+ matched = sscanf(pci_id_start, "PCI ID: 0x%04x\n", ®);
+ }
+ if (matched == 1) {
+ if (!gen_get_device_info(reg, &devinfo)) {
+ printf("Unable to identify devid=%x\n", reg);
+ return;
+ }
+
+ printf("Detected GEN%i chipset\n", devinfo.gen);
+
+ if (xml_path == NULL)
+ spec = gen_spec_load(&devinfo);
+ else
+ spec = gen_spec_load_from_path(&devinfo, xml_path);
+ }
+
+ matched = sscanf(line, " CTL: 0x%08x\n", ®);
+ if (matched == 1) {
+ print_register(spec,
+ register_name_from_ring(ctl_registers,
+ ARRAY_SIZE(ctl_registers),
+ ring_name), reg);
+ }
+
+ matched = sscanf(line, " HEAD: 0x%08x\n", ®);
+ if (matched == 1) {
+ head[num_rings++] = print_head(reg);
+ }
+
+ matched = sscanf(line, " ACTHD: 0x%08x\n", ®);
+ if (matched == 1) {
+ print_register(spec,
+ register_name_from_ring(acthd_registers,
+ ARRAY_SIZE(acthd_registers),
+ ring_name), reg);
+ }
+
+ matched = sscanf(line, " PGTBL_ER: 0x%08x\n", ®);
+ if (matched == 1 && reg)
+ print_pgtbl_err(reg, &devinfo);
+
+ matched = sscanf(line, " ERROR: 0x%08x\n", ®);
+ if (matched == 1 && reg) {
+ print_register(spec, "GFX_ARB_ERROR_RPT", reg);
+ }
+
+ matched = sscanf(line, " INSTDONE: 0x%08x\n", ®);
+ if (matched == 1) {
+ const char *reg_name =
+ instdone_register_for_ring(&devinfo, ring_name);
+ if (reg_name)
+ print_register(spec, reg_name, reg);
+ }
+
+ matched = sscanf(line, " INSTDONE1: 0x%08x\n", ®);
+ if (matched == 1)
+ print_register(spec, "INSTDONE_1", reg);
+
+ matched = sscanf(line, " fence[%i] = %Lx\n", ®, &fence);
+ if (matched == 2)
+ print_fence(&devinfo, fence);
+
+ matched = sscanf(line, " FAULT_REG: 0x%08x\n", ®);
+ if (matched == 1 && reg) {
+ const char *reg_name =
+ register_name_from_ring(fault_registers,
+ ARRAY_SIZE(fault_registers),
+ ring_name);
+ if (reg_name == NULL)
+ reg_name = "FAULT_REG";
+ print_register(spec, reg_name, reg);
+ }
+
+ matched = sscanf(line, " FAULT_TLB_DATA: 0x%08x 0x%08x\n", ®, ®2);
+ if (matched == 2)
+ print_fault_data(&devinfo, reg, reg2);
+
+ continue;
+ }
+
+ count++;
+
+ if (count > data_size) {
+ data_size = data_size ? data_size * 2 : 1024;
+ data = realloc(data, data_size * sizeof (uint32_t));
+ if (data == NULL) {
+ fprintf(stderr, "Out of memory.\n");
+ exit(1);
+ }
+ }
+
+ data[count-1] = value;
+ }
+
+ decode(spec,
+ buffer_name, ring_name,
+ gtt_offset, head_offset,
+ data, &count);
+
+ free(data);
+ free(line);
+ free(ring_name);
+}
+
+static void
+setup_pager(void)
+{
+ int fds[2];
+ pid_t pid;
+
+ if (!isatty(1))
+ return;
+
+ if (pipe(fds) == -1)
+ return;
+
+ pid = fork();
+ if (pid == -1)
+ return;
+
+ if (pid == 0) {
+ close(fds[1]);
+ dup2(fds[0], 0);
+ execlp("less", "less", "-FRSi", NULL);
+ }
+
+ close(fds[0]);
+ dup2(fds[1], 1);
+ close(fds[1]);
+}
+
+static void
+print_help(const char *progname, FILE *file)
+{
+ fprintf(file,
+ "Usage: %s [OPTION]... [FILE]\n"
+ "Parse an Intel GPU i915_error_state.\n"
+ "With no FILE, debugfs-dri-directory is probed for in /debug and \n"
+ "/sys/kernel/debug. Otherwise, it may be specified. If a file is given,\n"
+ "it is parsed as an GPU dump in the format of /debug/dri/0/i915_error_state.\n\n"
+ " --help display this help and exit\n"
+ " --headers decode only command headers\n"
+ " --color[=WHEN] colorize the output; WHEN can be 'auto' (default\n"
+ " if omitted), 'always', or 'never'\n"
+ " --no-pager don't launch pager\n"
+ " --no-offsets don't print instruction offsets\n"
+ " --xml=DIR load hardware xml description from directory DIR\n",
+ progname);
+}
+
+int
+main(int argc, char *argv[])
+{
+ FILE *file;
+ const char *path;
+ struct stat st;
+ int c, i, error;
+ bool help = false, pager = true;
+ const struct option aubinator_opts[] = {
+ { "help", no_argument, (int *) &help, true },
+ { "no-pager", no_argument, (int *) &pager, false },
+ { "no-offsets", no_argument, (int *) &option_print_offsets, false },
+ { "headers", no_argument, (int *) &option_full_decode, false },
+ { "color", required_argument, NULL, 'c' },
+ { "xml", required_argument, NULL, 'x' },
+ { NULL, 0, NULL, 0 }
+ };
+
+ i = 0;
+ while ((c = getopt_long(argc, argv, "", aubinator_opts, &i)) != -1) {
+ switch (c) {
+ case 'c':
+ if (optarg == NULL || strcmp(optarg, "always") == 0)
+ option_color = COLOR_ALWAYS;
+ else if (strcmp(optarg, "never") == 0)
+ option_color = COLOR_NEVER;
+ else if (strcmp(optarg, "auto") == 0)
+ option_color = COLOR_AUTO;
+ else {
+ fprintf(stderr, "invalid value for --color: %s", optarg);
+ exit(EXIT_FAILURE);
+ }
+ break;
+ case 'x':
+ xml_path = strdup(optarg);
+ break;
+ default:
+ break;
+ }
+ }
+
+ if (help || argc == 1) {
+ print_help(argv[0], stderr);
+ exit(0);
+ }
+
+ if (optind >= argc) {
+ if (isatty(0)) {
+ path = "/sys/class/drm/card0/error";
+ error = stat(path, &st);
+ if (error != 0) {
+ path = "/debug/dri";
+ error = stat(path, &st);
+ }
+ if (error != 0) {
+ path = "/sys/kernel/debug/dri";
+ error = stat(path, &st);
+ }
+ if (error != 0) {
+ errx(1,
+ "Couldn't find i915 debugfs directory.\n\n"
+ "Is debugfs mounted? You might try mounting it with a command such as:\n\n"
+ "\tsudo mount -t debugfs debugfs /sys/kernel/debug\n");
+ }
+ } else {
+ read_data_file(stdin);
+ exit(0);
+ }
+ } else {
+ path = argv[optind];
+ error = stat(path, &st);
+ if (error != 0) {
+ fprintf(stderr, "Error opening %s: %s\n",
+ path, strerror(errno));
+ exit(1);
+ }
+ }
+
+ if (option_color == COLOR_AUTO)
+ option_color = isatty(1) ? COLOR_ALWAYS : COLOR_NEVER;
+
+ if (isatty(1) && pager)
+ setup_pager();
+
+ if (S_ISDIR(st.st_mode)) {
+ int ret;
+ char *filename;
+
+ ret = asprintf(&filename, "%s/i915_error_state", path);
+ assert(ret > 0);
+ file = fopen(filename, "r");
+ if (!file) {
+ int minor;
+ for (minor = 0; minor < 64; minor++) {
+ free(filename);
+ ret = asprintf(&filename, "%s/%d/i915_error_state", path, minor);
+ assert(ret > 0);
+
+ file = fopen(filename, "r");
+ if (file)
+ break;
+
+ free(filename);
+ }
+ }
+ if (!file) {
+ fprintf(stderr, "Failed to find i915_error_state beneath %s\n",
+ path);
+ return EXIT_FAILURE;
+ }
+ } else {
+ file = fopen(path, "r");
+ if (!file) {
+ fprintf(stderr, "Failed to open %s: %s\n",
+ path, strerror(errno));
+ return EXIT_FAILURE;
+ }
+ }
+
+ read_data_file(file);
+ fclose(file);
+
+ /* close the stdout which is opened to write the output */
+ fflush(stdout);
+ close(1);
+ wait(NULL);
+
+ if (xml_path)
+ free(xml_path);
+
+ return EXIT_SUCCESS;
+}
+
+/* vim: set ts=8 sw=8 tw=0 cino=:0,(0 noet :*/
--
2.11.0
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